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Old 09-17-2008, 06:26 PM
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Turbo Whistle

I have done the AFE stage 2 intake and the 3" down pipe and cat delete with the 4" exhaust. The turbo whistle (sounds sweet) is there at low speeds/RPM's but when increased, it get a "flutter" type noise in with it and doesn't whistle. I have checked all exhaust connections for a leak, but can't locate. Any ideas?????
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Old 09-17-2008, 06:35 PM
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Quote:
Originally Posted by hijo202 View Post
I have done the AFE stage 2 intake and the 3" down pipe and cat delete with the 4" exhaust. The turbo whistle (sounds sweet) is there at low speeds/RPM's but when increased, it get a "flutter" type noise in with it and doesn't whistle. I have checked all exhaust connections for a leak, but can't locate. Any ideas?????
Thanks
the flutter is more than likely turbo surge....
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Old 09-18-2008, 04:41 AM
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Ok, what would be the fix for this? I have heard of it before, and if memory serves me correct, it was installing a larger intake tube and something with the Turbo????
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Old 09-18-2008, 05:00 AM
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putting the stock intake back on would be the only 'fix'. It won't hurt anything.
stump did a writeup, here is the thread

"turbo fart"
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Old 09-18-2008, 07:47 AM
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turbo surge can only be fixed with a aftermarket turbo in his case.... the intake made it more apparent that he had turbo surge... it is not caused by the intake...

you can put the stock intake back on but you will still have surge.. you just wont be able to hear it....
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Old 09-18-2008, 12:40 PM
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Thanks for the replies. But....I am not hearing it from the intake area. It's mainly when I am going by a solid fence or wall on my right side (exhaust side) and I hear it from the tail pipe outlet. From 1800 - 2100 RPM's (going slow around 25-35 mph)it sings, but above that I hear a "fluttering" sound and no more singing. Or am I just hearing this from the intake area like you all have been saying??? Could any issue with the up pipe gaskets I have read about. The truck is about to turn 300,000. Doesn't leak and pulls very strong. Still a newbie and learning as I go.

Thanks again for all help
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Old 09-18-2008, 12:48 PM
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I know what you're talking about, it's sort of a quality of the exhaust noise more than turbo surge. Turbo surge actually seems to be accompanied by (or causes) a hesitation, feels like a partial loss of power. My son put a Wicked Wheel on his truck and says the surge is gone...I think it's part of the turbo wheel, but the more experienced owners here can correct me. My truck has the factory stock diameter pipe w/o muffler or cat. It sort of sounds like you describe...
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Old 09-18-2008, 01:09 PM
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MJKTEN, exactly, there is not a loss of power at all or any hesitation. I don't know if I am chasing a gremlin or not, but I get a few strange looks when it occurs. Other than the sound, making sure that there is not a problem starting to develop or anything. I have thrown parts at my Jeep CJ before and wasted alot of money for un-necessary repairs.
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Old 09-18-2008, 03:21 PM
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does it sound like more of an exhaust sound? or is it a turbo sound??

im lost on what you are saying.

could you get some video?
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Old 09-18-2008, 05:07 PM
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i think that is just the exhaust being louder than the turbo mine does is when its against a wall, its loud and i can t hear the turbo but the psi is still raising
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